CVE-2018-5152

critical

Published — · Modified —

CVSS v3

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CVSS v2

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VIR risk

9.5

Description

WebExtensions with the appropriate permissions can attach content scripts to Mozilla sites such as accounts.firefox.com and listen to network traffic to the site through the "webRequest" API. For example, this allows for the interception of username and an encrypted password during login to Firefox Accounts. This issue does not expose synchronization traffic directly and is limited to the process of user login to the website and the data displayed to the user once logged in. This vulnerability affects Firefox < 60.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-5152

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201805-10

OS impact

OS	Version	Status	Fixed in
arch		fixed	`60.0-1`
debian	sid	fixed	`60.0-1`

References

Verify integrity in audit chain (admin only). AS-IS.